What is the Pearson Scale?

The Pearson Scale was an early system used to categorize tornadoes based on their intensity, primarily in terms of wind speed and damage potential. It served as a foundation for later tornado rating systems, such as the Fujita Scale (F-Scale) and the modern Enhanced Fujita Scale (EF-Scale).

This scale aimed to classify tornadoes by assessing visible damage to structures and vegetation. However, it lacked the scientific precision of later scales, leading to its replacement. Today, the Enhanced Fujita Scale (EF-Scale) is the standard for rating tornado intensity in the United States.

Importance in Storm Safety

While the Pearson Scale is no longer in active use, its role in the historical development of tornado classification systems is significant. Understanding how tornado intensity is measured helps individuals and communities better prepare for severe weather events. Modern storm shelters and safe rooms are designed based on updated tornado classification systems to ensure protection from extreme wind speeds and debris impact.